Denna forskning fokuserar på hjärtfrekvensvariation (HRV), vilket är fluktuationer i tidsintervallet mellan följande hjärtslag. Dessa variationer samlas in genom användandet av ett elektrokardiogram (EKG). Genom att analysera HRV data från 97 deltagande, syftar denna studie till att upptäcka om olika faktorer som ålder, kön, ångest, och kroppsmått påverkar HRV. Att förstå HFV är väsentligt eftersoHeart rate variability (HRV) describes the variations in time intervals between heartbeats. The signals are usually recorded from electrocardiogram (ECG) beat detection. In this thesis, HRV signals of 97 participants were analyzed using spectral and statistical analysis. The signals are non-stationary, however, the data was treated approximately short time stationary. Using spectral analysis, powe

Studiens syfte var att undersöka vilka patienter med depressionsdiagnos som behandlats med individuell psykoterapi hos psykolog inom psykiatriska öppenvården vid Psykiatri Affektiva, Sahlgrenska Universitetssjukhuset åren 2013 till 2023. Data inhämtades från klinikens patientadministrativa system där vårdåtgärder registreras och innefattade 27 008 patienter. Patienter med depressionsdiagnos gThe study aimed to investigate which patients with diagnosis of depression received individual psychotherapy from a psychologist within psychiatric outpatient care at Psykiatri Affektiva, Sahlgrenska Universitetssjukhuset, between 2013 and 2023. Data was obtained from the clinic’s patient administrative system where care measures are registered and included 27 008 patients. Patients with diagnosis

The UN-affiliated World Health Organization (WHO) estimated that in 2019, more than 90 % of people living on Earth were constantly exposed to concentrations of ambient outdoor pollutants higher than the air quality guideline limits. One of the most notorious air pollutants is particulate matter, consisting of fine natural or anthropogenic particles suspended in the air. Recent studies have shown t

In pursuit of energy efficiency and sustainable development, goals have been set by the EU and Sweden to improve the energy performance of buildings and reduce their environmental impact. Renovating the existing building stock is a path to achieving the energy and climate goals. This study investigates and analyses various retrofitting options for multifamily residential buildings in Skåne, Sweden

Energieffektivitet är viktigt i vårt moderna samhälle och i jakten på det kan oväntade problem uppstå. När Axis Communications i strävan efter ökad bildkvalitet och energieffektivitet tillämpade IR-stroboskop med hög toppeffekt som belysning åt kameror med global slutare, observerades en artefakt i form av ett vitt band i närliggande kameror med rullande slutare. Syftet med detta examensarbete är Energy efficiency is key in our modern society, and in its pursuit, unexpected problems can appear. For instance, when Axis Communications in the pursuit of image quality and energy efficiency used strobing IR-illumination to illuminate for their global shutter cameras, they observed an artefact in the form of a white band in their rolling shutter cameras. The purpose of this thesis is to find a s

The use of cannabis has increased in Sweden, and Malmö is one of the cities in which a big part of the inhabitants have tried the illicit drug. At the same time, the government works to increase the sanctions on cannabis use and possession. Thus, since the legislation on cannabis in Sweden is becoming more strict while a big part of Malmös citizens use cannabis, this study has aimed to investigate

This qualitative study examines the experiences of particularly vulnerable girls affected by child marriage and prostitution in Kenya, with the aim of exploring how social control mechanisms and gender inequality perpetuate these harmful practices. By using a thematic analysis approach within the theoretical framework of social control theory, primary and secondary deviance and dominance theory, t

This master's thesis, in collaboration with Comsys AB, examines the optimal size of a Battery Energy Storage System (BESS) for two services - energy shifting and constant power delivery across the four price areas SE1, SE2, SE3, and SE4 in Sweden. For energy shifting applications, the optimal storage capacities were found to be 20 MWh (2 MWh/MW) in SE1, SE2, and SE4. However, a 0.5 MWh/MW stor

Platssamverkan aktualiserar en rad aktuella ämnen, såsom arbete med social hållbarhet, segregation och gentrifiering. Polisens lista över utsatta områden påverkar ett område, och det är något som fastighetsägare måste ta ställning till. Många fastighetsbolag arbetar med platssamverkan men ännu finns inte mycket forskning på vilka effekter frivilliga former av samverkan har och hur fastighetsbolag Place-based collaboration raises various contemporary issues, including efforts towards social sustainability, rising segregation, and gentrification. The Swedish police's identification of vulnerable areas impacts localities, prompting property owners to respond. While many property companies engage in collaboration, research on the effects of voluntary collaboration and the diverse approache

Eftersom innovation ger konkurrensfördelar, ökar marknadsandelar och påskyndar den övergripande institutionella tillväxten, utgör innovation en erkänd framgångsfaktor för organisationer. Under det senaste decenniet har ett paradigmskifte från traditionella innovationsstudier, med fokus på forskning och utveckling, till medarbetardriven innovation (EDI) skett. Då den senaste litteraturkartläggningeInnovation is widely recognized as a critical factor of organizational success as it cultivates competitive edge, augments market share, and accelerates overall institutional growth. During the last decade, a paradigm shift from the traditional innovation studies, focusing on research and development (R&D), toward employee-driven innovation (EDI) has been observed. However, the last literature

På senaste tiden har flera bilder på galaxer från James Webb Space Telescope (JWST) uppmärksammats. Spektakulära bilder på olika galaxer i alla dess former visas upp och allmänheten kan beundra allt det vackra i Universum. I och med att det ljus som kommer till oss från dessa galaxer har färdats ett visst avstånd, kan man säga att ju längre bort vi observerar - desto längre bak i tiden ser vi. DThe details of galaxy formation are still an unsolved problem in astrophysics. Even though significant progress has been made in simulations and observations, it remains an unsolved issue to describe the complexity it yields. One of the reasons for this is the vast dynamical range in space and time. The smallest scales, where star formation occurs, are connected to the larger scale structure of th

The case company responded to rising uncertainties, such as supply chain disruptions, with a novel process incorporating crucial technology, emphasizing holism, transparency, and consensus. This approach not only mitigated issues linked to bounded rationality but also facilitated communication and decision-making through the interplay of technology and humans. However, the implementation also intr

I duellen mellan människor och bakterier har båda ett par ess i rockärmen. Människan har utvecklat läkemedel som hämmar bakteriens förmåga till att föröka sig och sprida infektionen vidare. Bakterien i sin tur har utvecklat knep för att komma undan. Under de senare åren hör vi allt oftare om antibiotikaresistens, det vill säga infektioner som inte längre svarar på vanlig behandling och vi behöver This project is part of a larger effort to design bacterial sialic acid inhibitors based on sialic acid, Neu5Ac. The emergence of antimicrobial resistance is a major concern for the public health and causes a significant number of deaths globally each year. There is an urgent need to discover novel antibacterials to still be able to cure infections in the future. This project explores a strategy b

In humanitarian settings, Gender-Based Violence (GBV) is a cause of human rights violations, notably affecting women in vulnerable situations. Migration crises, particularly those leading to the displacement of individuals, further aggravate the vulnerability of women. Recent years have seen a feminization of migration, marked by the higher influx of women migrating, highlighting the need for grea

Grön vätgas har lagts fram som en lösning på en av vår tids största utmaningar: Att klara av världens energiförsörjning samtidigt som de fossila bränslena avvecklas. Framför allt i sektorer som industriell kemikalieproduktion och långdistans-transport, där övergången till förnybar elektricitet är svårare. Grön vätgas produceras genom elektrolys, där en elektrisk ström driver den annars icke-spontaDue to increasing global energy demands and a need to move away from non-renewable energy sources, green hydrogen is now being considered as a possible replacement for fossil-based energy sources. Especially in “hard-to-abate” sectors, such as steel and petrochemical production, and long-distance transport, where the change to renewable electricity is more difficult. Green hydrogen is produced thr